@article { ISI:000241767100009,
	title = {Eu3+ doped lanthanum oxide nanowhiskers: microwave hydrothermal synthesis, characterization and photoluminescence properties},
	journal = {Journal of Physics D-Applied Physics},
	volume = {39},
	number = {18},
	year = {2006},
	month = {SEP},
	pages = {3974-3977},
	publisher = {IOP PUBLISHING LTD},
	type = {Article},
	address = {DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND},
	abstract = {<p>We report here a straightforward and rapid microwave - hydrothermal route providing an easy synthesis of Eu3+ doped La2O3 nanowhiskers. The nanostructured Eu3+ doped La2O3 is characterized by x-ray diffraction studies, scanning electron microscopy and photoluminescence (PL). The emission spectrum shows transitions from the excited 5D(0) state to F-7(J) (J = 0, 1, 2, 3, 4) levels of the Eu3+ ion. The most intense peak around 611 nm is due to the D-5(0) -\&gt; F-7(2) transition, expected from the Judd-Ofelt selection rules. PL spectra measurements demonstrate that the lanthanum oxide nanowhisker shows higher PL intensity.</p>},
	issn = {0022-3727},
	doi = {10.1088/0022-3727/39/18/008},
	author = {Murugan, A. Vadivel and Viswanath, Annamraju Kasi and Kakade, Bhalchandra A. and Ravi, V. and Saaminathan, V.}
}
@article { ISI:000255107700017,
	title = {EPR and DRS evidence for NO2 sensing in Al-doped ZnO},
	journal = {Sensors and Actuators B-Chemical},
	volume = {130},
	number = {2},
	year = {2008},
	month = {MAR},
	pages = {668-673},
	publisher = {ELSEVIER SCIENCE SA},
	type = {Article},
	address = {PO BOX 564, 1001 LAUSANNE, SWITZERLAND},
	abstract = {<p>Zinc oxide (ZnO) is a well-known semiconducting multifunctional material wherein properties right from the morphology to gas sensitivity can be tailor-made by doping or surface modification. Aluminum (Al)-incorporated porous zinc oxide (AI:ZnO) exhibits good response towards NO2 at low-operating temperature. The NO2 gas concentration as low as 20 ppm exhibits S = 17\% for 5 wt. \% Al-incorporated ZnO. The NO2 response increases with operating temperature and concentration and reaches to its maximum at 300 degrees C without any interference from other gases such as SO3, HCl, LPG and alcohol. Physico-chemical characterization likes differential thermogravimetric analysis (TG-DTA) electron paramagnetic resonance (EPR) and diffused reflectance spectroscopy (DRS) have been used to understand the sensing behavior for pure and A]-incorporated ZnO. The TG-DTA depicts formation of ZnO phase at 287 degrees C. The EPR study reveals distinct variation for O- (g=2.003) and Zn interstitial (g = 1.98) defect sites in pure and Al:ZnO. The DRS studies elucidate signature of adsorbed NO, species in aluminium-incorporated zinc oxide indicating its tendency to adsorb these species even at low temperatures. This paper is an attempt to correlate the gas sensing behavior with the physico-chemical studies such as EPR and DRS. (c) 2007 Published by Elsevier B.V.</p>},
	keywords = {aluminum doping, DRS, EPR, NO2 sensor, ZnO},
	issn = {0925-4005},
	doi = {10.1016/j.snb.2007.10.055},
	author = {Navale, Shalaka C. and Ravi, V. and Srinivas, D. and Mulla, Imtiaz S. and Gosavi, S. W. and Kulkarni, S. K.}
}
